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Juliette [100K]
2 years ago
7

How many terms does the expression have? -7+4-3x+8x−7+4−3x+8x

Mathematics
1 answer:
BlackZzzverrR [31]2 years ago
8 0

Answer:

2 I think

Step-by-step explanation:

first, simplify it

-7+4-3x+8x-7+4-3x+8x

-6+10x

2 terms

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Bruce bought two books one book cost $4.00 more than three times the other . Together, the two books cost him $72
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One is $12 the other is $72
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3 years ago
Janine babysits for $14.50 per hour. She also works as a dishwasher at her family's restaurant for $9.50 per hour. Her family ne
FrozenT [24]
The system of inequalities are
14.5·x + 9.5·y ≥ 140
7 ≤ y ≤ 10
x + y ≤ 15
2) 14.5·x + 9.5·y ≥ 140 represents the total amount of money Janine can earn
7 ≤ y ≤ 10 represents the range of values, Janine can spend dishwashing
x + y ≤ 15 represents the total number of hours Janine will like to work each week
3) 8 hours babysitting, 7 hours dishwashing
Step-by-step explanation:
The given parameters are;
The amount per hour Janine makes from babysits = $14.50
The amount per hour Janine makes from dishwashing = $9.50
The minimum number of hours Janine can spend dishwashing = 7 hours
The maximum number of hours Janine can spend dishwashing = 10 hours
The maximum number of hours Janine can work each week = 7 hours
The minimum amount she wants to make each week = $140
Let x represent the number of hours Janine spends babysitting and let y represent the number of hours Janine spends dishwashing
1) From the question, we have;
14.5·x + 9.5·y ≥ 140
7 ≤ y ≤ 10
x + y ≤ 15
2) Where
14.5·x + 9.5·y ≥ 140 represents the total amount of money Janine can earn
7 ≤ y ≤ 10 represents the range of values, Janine can spend dishwashing
x + y ≤ 15 represents the total number of hours Janine will like to work each week
Making, y, the subject of the formula of the above inequalities and plotting as functions is given as follows;
y ≥ 140/9.5 - (14.5/9.5)·x
y ≤ 15 - x
3) In order to earn as much money as possible given that the amount Janine earns from babysitting is more than the amount she earns from dishwashing, Janine should spend the least amount of time dishwashing, which is 7 hours, as given, and then spend the remaining 8 hours babysitting to receive $14.5 × 8 + $9.5×7 = $182.5
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Solve for x: please help
valina [46]

Answer:

45 because an acute angle is 45 degrees

7 0
2 years ago
Read 2 more answers
Which system of equations is represented by the graph?
Arlecino [84]

Answer: C

Step-by-step explanation:

y = mx + b

To get ‘b’ look at the y intercepts.

Both y intercepts are 7 and - 1

For this problem it’s all you need, since the only equations with b being - 1 and 7 is C.

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Help me solve this equation!<br> 4x + 10 = -2y<br> Remember to use the y = mbx+b formula!
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Y=-2x-5
You can divide by -2 on both sides of the equal sign getting the answer above.
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